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task.js
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task.js
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var Task = function() { }
Task._subclasses = {};
Task._createSubclass = function(name, params) {
var Subclass = function() {
this.name = name;
this.params = params;
this.args = Array.prototype.slice.call(arguments); // cast to array
this.id = name + '(';
for (var i = 0; i < params.length; i++) {
this[params[i]] = arguments[i];
this.id += params[i] + '=' + arguments[i];
if (i < params.length - 1) this.id += ', ';
}
this.id += ')';
}
Task._subclasses[name] = Subclass;
Subclass.prototype = new Task();
return Subclass;
}
Task.backend = function(name, params, run) {
var taskClass = Task._createSubclass(name, params);
taskClass.prototype.run = run;
taskClass.prototype.isView = false;
return taskClass;
};
Task.view = function(name, params, view, controller) {
var taskClass = Task._createSubclass(name, params);
taskClass.prototype.view = view;
taskClass.prototype.controller = controller;
taskClass.prototype.isView = true;
taskClass.prototype.uri = function() {
return '/task/' + this.name + '/' + this.args.join('/');
}
return taskClass;
}
Task.viewFromUrl = function(url) {
// Instantiate a Task from the uri
var items = url.split('/');
var taskName = items[2];
var args = items.slice(3);
var viewClass = Task._subclasses[taskName];
console.log(viewClass.prototype);
// TODO: assert it's a view...
// weird code i found somewhere
function construct(constructor, args) {
function F() {
return constructor.apply(this, args);
}
F.prototype = constructor.prototype;
return new F();
}
return construct(viewClass, args);
}
module.exports = Task;